Undskyld er der ik’ noget signal her?.

Fifteen-year-old Kasper has to involuntarily spend four days of his summer vacation in captivity with his old heron of a grandmother on a small island. While trying to find cell phone coverage, he spotted a girl of the same age in the house next door. Bikini-clad Nanna is exciting and different, but she reveals him in beluring her over the hedge.